IF water harvesting is not practiced in your locality, try to launch a campaign to initiate water harvesting ,make a poster for it.

Explanation

1) rain water can be used to recharge the ground water.
2) It also helps to maintain the flow of rivers.
3) It is useful in recharging ground waters in the urban areas.
4) During the rainy season,rain water can be collected in large tanks, cisterns, reservoirs etc., for future use.
5) This is called rain water harvesting
6. We shall construct soak pits in houses, schools , offices , bus stations wherever possible.
7. We should save each rain drop to save our water resources.